@off242 Suunto offers an API to accept workouts from other platforms, and makes partnerships, such as with Hammerhead and Xiaomi in the past. So you should request the platform you use to contact Suunto, or just implement the Suunto API to send activities.
@sky-runner If you save the route to your routes and star the route it will sync to the Suunto watches. Suunto has improved waypoint syncing but I have not tested to see if Strava waypoints will sync.
answering to myself: i applied the (infamous) concept “in doubt, reboot” (well, in that case, "reset) and performed a reset of my Vertical.
After doing the initial configuration and sync with the Suunto app, I went for a run and this time I could see the Nolio activity suggested to me, so the reset fixed the issue.